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Krebs cycle Original Scenario-Based Practice

Biology · Cellular Energetics · Biology · Cellular Respiration

1 Biology practice questions on Krebs cycle. Questions built around original scenarios.

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Questions

  1. 1.

    In an advanced bio-engineering lab, Dr. Vane creates an artificial enzymatic chamber designed to simulate the Krebs cycle for extracting usable energy from two-carbon acetate units. During a full operational cycle initiated by condensing one acetyl group with a recycled four-carbon acceptor, sensors monitor all carbon outputs, phosphorylated molecules, and reduced coenzymes. To confirm that the simulated pathway accurately reproduces the biochemical stoichiometry of a single turn of the biological cycle, what net product profile must the diagnostic readout report?

    • A) 1 CO2, 2 NADH, 2 FADH2, and 2 ATP
    • B) 2 CO2, 2 NADH, 1 FADH2, and 2 ATP
    • C) 4 CO2, 6 NADH, 2 FADH2, and 2 ATP
    • D) 2 CO2, 3 NADH, 1 FADH2, and 1 ATP (or GTP)

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